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Assurance Wireless USA, L.P. [1] is a telephone service subsidized by the federal Lifeline Assistance program, a government benefit program supported by the federal Universal Service Fund. The service provides to low-income eligible people a free phone, [ 2 ] [ 3 ] free monthly data, unlimited texting, and free monthly minutes.
STU-III (Secure Telephone Unit - third generation) is a family of secure telephones introduced in 1987 by the NSA for use by the United States government, its contractors, and its allies. STU-III desk units look much like typical office telephones, plug into a standard telephone wall jack and can make calls to any ordinary phone user (with such ...
However, these conditions do not hold for cellular modems. [1] As of 2019, all available mobile phones have a proprietary baseband chip (GSM module, cellular modem), [2] [3] [4] except for the Necuno, which has no such chip and communicates by peer-to-peer VOIP. [5] [6] The modem is usually integrated with the system-on-a-chip and the memory. [4]
In general, the types of phones and other devices supported by the MVNOs are in line with the technologies used by the Mobile Network Operator (MNO), the underlying cellular network provider. All major and regional MNOs use 4G LTE / LTE Advanced and 5G NR protocols (2G and 3G having been deprecated and shut down), with GSM technologies.
The TAG Mobile Lifeline Program provides cell phones to those in the low-income category and also individuals on government assistance programs in the US. [ 1 ] TAG Mobile also offers affordable prepaid wireless services including free international calling to over 80 countries, talk, text and data services and mobile devices.
According to the Q Link Wireless site, it offers ACP subscribers under its network a new tablet along with free and unlimited cell phone service, but adds that the ACP “requires subscribers to ...
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